| A | B |
| nationalism | A devotion to the interests and culture of one's nation. |
| militarism | The development of armed forces and their use as a tool of diplomacy. |
| Allies | The Triple Entente of Britian, France and Russia. |
| Central Powers | The triple alliance of Germany, Austia-Hungry, and the Ottoman Empire |
| Archduke Franz Ferdinand | His death was the direct cause of World War I. |
| no man's land | The land between the trenches consisting of mud pockmarked with shell craters and barbed wire. |
| trench warfare | Armies fought for mere yards of ground. |
| Lusitania | A British ship sunk by a German U-boat. |
| Zimmermann Note | An intercepted telegram that proposed an alliance between Mexico and Germany. |
| Eddie Rickenbacker | American fighter pilot who became Ace of Aces. |
| Selective Service Act | Men were required to register with the government in order to randomly be selected for service. |
| convoy system | A heavy guard of destroyers escorted merchant ships back and forth across the Atlantic. |
| American Expeditionary Force | (AEF)US forces consisting of men from across the country. |
| General John J. Pershing | Leader of the AEF. |
| Alvin York | A US soldier who killed 25 Germans and captured 132 others. |
| conscientious objector | A person who opposed warfare on moral grounds. |
| armistace | A truce that causes a cease-fire. |
| War Industries Board | Regulatory board that encouraged companies to use mass-production techniques to increase efficiency. |
| Bernard M. Baruch | Leader of the War Industries Board. |
| propoga | Biased communiction designed to influence people's thoughts and actions. |
| Gerorge Creel | The head of the Committee on Public Information (CPI) |
| Espionage and Sedition Acts | Punishments for interfering with the war effort or for saying anything disloyal, profane or abusive about the government or war effort. |
| Great Migration | The large-scale migrations of hundreds of thousands of Southern blacks to the cities in the North. |
| Fourteen Points | Wilson's plan for world peace. |
| League of Nations | International organization to address diplomatic crises. |
| Georges Clemenceau | The French premier who was determined to prevent future German invasions. |
| David Llyod George | British prime minister who wanted to make Germany pay for the war. |
| Treaty of Versailles | The treaty ending World War I, which established nine new nations and shifted the boundaries of other nations. |
| reparations | War damages. |
| war-guilt clause | Part of the Treaty of Versailles which forced Germany to admit sole responsibility for starting World War I. |
| Henry Cabot Lodge | Leader of a group of senators who opposed the League of Nations. |